Questions and Answers
What is a key characteristic of performance-based assessments?
Performance-based assessments only focus on the final product or outcome.
False
What is the primary purpose of feedback in performance-based assessments?
To provide specific and actionable feedback that allows individuals to understand their strengths and areas for improvement.
Performance-based assessments often involve tasks that __________________ real-world situations.
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Match the following examples of performance-based assessments with their descriptions:
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Which of the following is NOT a factor that affects the rate of photosynthesis?
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Oxygenic photosynthesis occurs in plants, algae, and some bacteria, while anoxygenic photosynthesis is exclusive to certain bacteria.
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What are the two main stages of photosynthesis, and where do they take place within the chloroplast?
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Chlorophyll ______ absorbs blue and red light, reflecting green light, giving plants their characteristic color.
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Match the following components of photosynthesis with their descriptions:
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Study Notes
Performance-Based Assessment
- A form of evaluation where students demonstrate knowledge, skills, and competencies by performing specific tasks in a practical manner.
Key Characteristics
- Authentic Tasks: Tasks mimic real-world situations in the field of study or work.
- Demonstration of Skills: Assessments require applying knowledge and skills to solve problems or complete tasks.
- Complexity: Tasks involve higher-order thinking skills like analysis, synthesis, and evaluation, not just recalling facts.
- Process-Oriented: The assessment process focuses on the steps taken to reach the outcome, not just the final product.
- Feedback: Specific and actionable feedback helps students understand strengths and areas for improvement.
Examples of Performance-Based Assessments
- Presentations: Oral presentations to demonstrate understanding and communication skills.
- Portfolios: Collections of work showcasing growth, achievements, and learning over time.
- Simulations: Interactive scenarios where individuals respond to challenges or make decisions in a controlled environment.
- Projects: Long-term assignments requiring planning, execution, and reflection, such as research projects, engineering designs, or creative productions.
Benefits of Performance-Based Assessments
- Provide a more comprehensive view of an individual's abilities compared to traditional testing methods.
- Encourage deeper learning, problem-solving skills, and application of knowledge in practical contexts.
Photosynthesis Overview
- Photosynthesis converts light energy into chemical energy, producing glucose and oxygen
- Process occurs in plants, algae, and some bacteria
- Essential for life on Earth, providing energy and organic compounds
Light-Dependent Reactions
- Take place in thylakoid membranes of chloroplasts
- Light energy excites electrons, which are passed along a series of electron carriers
- Produce ATP and NADPH
- Energy from light is stored in ATP and NADPH
Light-Independent Reactions (Calvin Cycle)
- Occur in stroma of chloroplasts
- ATP and NADPH from light-dependent reactions are used to convert CO2 into glucose
- Regenerate RuBP (ribulose-1,5-bisphosphate) for continuous cycle
- Fix CO2 into glucose using energy from ATP and NADPH
Factors Affecting Photosynthesis
- Light intensity and wavelength: impacts rate of photosynthesis
- Temperature: optimal temperature range for photosynthesis varies between species
- Water availability: necessary for photosynthesis, drought can limit rates
- CO2 concentration: increased CO2 can enhance photosynthesis
- pH: optimal pH range for photosynthesis varies between species
Types of Photosynthesis
- Oxygenic photosynthesis: produces oxygen as a byproduct, typical of plants and algae
- Anoxygenic photosynthesis: does not produce oxygen as a byproduct, typical of some bacteria
Pigments
- Chlorophyll a: main pigment, absorbs blue and red light, reflects green light
- Accessory pigments (e.g., chlorophyll b, carotenoids): absorb light energy and transfer it to chlorophyll a
- Pigments work together to absorb light energy for photosynthesis
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Description
Evaluate student knowledge and skills through practical tasks that mimic real-world situations, requiring application of knowledge to solve problems or complete tasks.
